Date: Mon, 9 Sep 1996 18:29:00 -0400 (EDT) From: fwmiller@cs.UMD.EDU (Frank W. Miller) To: freebsd-hackers@FreeBSD.ORG Cc: fwmiller@cs.UMD.EDU (Frank W. Miller) Subject: kernel performance Message-ID: <199609092229.SAA01670@yangtze.cs.UMD.EDU>
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For lack of a better place to start, I chose this mailing list. I am curious if there are any performance monitoring facilities built into the kernel. In particular, I am interested in obtaining timings of the execution of the read() and write() system calls. I want to break the measurements down according to how much time is spent in various areas of the kernel code, how much is spent waiting for I/O device hardware, etc. Any pointers would be helpful. Later, FM -- Frank W. Miller Department of Computer Science fwmiller@cs.umd.edu University of Maryland, College Park http://www.cs.umd.edu/~fwmiller College Park, Maryland 20742
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